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Table 2 Statistics of sp3 stereochemical content in the KEGG Compound and BioMeta databases

From: Correcting ligands, metabolites, and pathways

Stereochemistry OK # in KEGG # in BioMeta # Corrected
Not possible + 3725 3764  
Undefined (i.e., omitted) 554 366 188
Incompletely defined – meso 24 3 21
Incompletely defined – absolute 1080 691 389
Incompletely defined – relative 294 171 123
Completely defined – meso + 56 89  
Completely defined – absolute + 3735 4823  
Completely defined – relative 2032 1669 363
Total not OK   3984 2900 1084
Total OK   7516 8676  
Total   11500 11576  
  1. The numbers in this table give a more detailed breakdown of the sp3 stereochemistry enhancements from Table 1. Here "OK" means a single, completely defined, compound. The "unspecified enantiomer" cases from Table 1 are split here between two "relative" stereochemistry cases, incompletely and completely defined. Note that not all "Completely defined – relative" cases need to be errors – a number of drugs may be racemic compounds.